Homicide investigators

Investigators from the Chicago Police Department crime lab at the scene of a homicide, near the corner of 122nd Street and Union Avenue in the West Pullman Neighborhood.

Investigators from the Chicago Police Department crime lab at the scene of a homicide, near the corner of 122nd Street and Union Avenue in the West Pullman Neighborhood. (Peter Nickeas / Chicago Tribune)

Investigators from the Chicago Police Department crime lab at the scene of a homicide, near the corner of 122nd Street and Union Avenue in the West Pullman Neighborhood.